I say "See you later, alligator," or perhaps "Later, gator."
You say:
In a while, crocodile.
After a while, crocodile.
After while, crocodile.
If you don't use these phrases in your every day life, a.) why aren't you and b.) choose the one that sounds most correct.
Also, if you need farewells for additional parties:
"Fare-thee-well, gharial." (You will have to mispronounce gharial for this to be a true rhyme.)
"Get on over, tomistoma."
"Say amen, caiman." (This is most suitable if the caiman is a clergymember of some Christian denomination or other.)
"See you again, eusuchian." (Eusuchians are the group of crocodylomorphs that first appeared in the Early Cretaceous and includes all living crocodilians.)



















